What's supposed to happen here ?

[JonathanT]

Ok where top of inner wing meets bulkhead. Is there supposed to be a drain hole here? Or should it be completely blocked off with mastic as I'm sure mine was before I replaced the wings.

It means the channel below the windscreen has nowhere to drain to?

 

[Azazello]

No no, there should be a hole of course!

 

[JonathanT]

Great thank you Azzazello -glad I asked

 

[mojobaby]

Hi Jonathan, the water runs through that hole and then down to the front wheel via a lip/channel on the front wing.

Due to mud getting thrown up by the wheel, this channel often gets blocked and can cause rust. I'm sorting mine out at the moment.

It might be a good idea to paint some sealant on it (which I've just done). Unfortunately the rust has already caused some damage